Life picture

If we describe the direction in our daily life, there are four directions, southeast, northwest. If you want to divide again, you can add four more, southeast, northeast, southwest, and northwest. In short, there are four main directions, east, west, south and north. Why are there four? This is because we are using two-dimensional space as a benchmark. If you are to draw two coordinate axes in two-dimensional space, that is, the x-axis and the y-axis, the direction will naturally be four. It can be said that this is southeast, northwest.

But if you expand from two-dimensional to three-dimensional, there will be two more directions, up and down. It appears that three-dimensional space and two-dimensional space are completely different. There are even two more directions, so the laws that apply to three-dimensional space are naturally very different from two-dimensional space, just as the theorems in solid geometry differ from the theorems in plane geometry. Therefore, if it is imagined that there are ants living in a two-dimensional space, then the law seen in the eyes of these ants is naturally limited by space. In order to paraphrase keywords, poverty limits imagination, and for these ants space limits imagination.

Humans live in three-dimensional space, so is there a higher latitude space? If anything, the laws of high latitude space are naturally inconceivable to our three-dimensional heads. So, we must remember that the unknown world is beautiful.